Rhodium-Catalyzed Highly Enantioselective Addition of Arylboronic Acids to Cyclic Aldimines: Practical Asymmetric Synthesis of Cyclic Sulfamidates
作者:Ming-Hua Xu、Hui Wang
DOI:10.1055/s-0033-1338418
日期:——
efficient asymmetric arylation of cyclic N-sulfonyl aldimines with arylboronic acids catalyzed by a rhodium/ sulfur–olefin ligand complex under mild conditions is described. A wide range 4-aryl-3,4-dihydro-1,2,3-benzoxathiazine 2,2-dioxides were obtained in extremely high yields (93–99%) and high enantiomeric purities (97–99% ee). A highly efficient asymmetric arylation of cyclic N-sulfonyl aldimines with
Compound containing anthrone and nitrogen-containing heterocycle and application in OLED devices
申请人:VALIANT CO., LTD.
公开号:US20200354347A1
公开(公告)日:2020-11-12
Disclosed are a compound with anthrone and N-containing heterocycle and an application thereof in an OLED. The compound contains anthrone and N-containing heterocycle structure which are both strong electron-withdrawing groups. The compound has a deep HOMO energy level and high electron mobility and is suitable for use as hole blocking materials or electron transport materials; the compound can also be used as a host material for electron-type light-emitting layers; in addition, the compound of the present invention has strong group rigidity, not easily causes crystallization and aggregation between molecules, and has good film-forming property. After the compound of the present invention is applied to an OLED device as an organic electroluminescent functional layer material, the current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; moreover, the compound can improve the service life of the device.
Provided is an organic light emitting device comprising a light emitting layer comprising a compound of Chemical Formula 1 and a compound of Chemical Formula 2:
wherein:
Ar
1
, Ar
2
, Ar
4
and Ar
5
are each independently a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing N, O or S;
Ar
3
is hydrogen, or a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing N, O or S;
L
1
to L
3
are each independently a single bond or a substituted or unsubstituted C
6-60
arylene;
L
4
to L
6
are each independently a single bond or a substituted or unsubstituted C
6-60
arylene or C
2-60
heteroarylene containing N, O or S;
L
7
is a substituted or unsubstituted C
6-60
arylene;
R
1
is hydrogen, deuterium, or a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing one or of N, O and S;
a is 0 to 7.